Combination and key padlock



M. TUDUROV.

COMBINATION AND KEY PADLOCK.

APPLICATION FILED OCT-14. |919.

C N R d 0 N T m Z. l f4.

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UNITED] STATES MARKO TUDOROV, OF SAN FRANCISCO, CALIFORNIA.

COMBINATION ANI) KEY PADLOCK.

Specification of Letters Patent.

Patented Yb, 1920.

v.Application led October 14, 1919. lSerial No. 330,548'.

T 0 all whom t may concern:

Be it known that I, MARKO TUnoRov, citizen of the United States, residing at San Francisco, in the county of San Francisco, State of California, have invented a new and useful Combination and Key Padlock, of which the following is a specifica-- tion in such full and clear terms as will enable those skilled in the art to construct and use the same.

My invention relates to improvements in combination and key padlocks, and one object of the present invention is to provide means for operating a combination lock by the use of a key. Y

Another object of the invention is to provide means for operating the combination lock by the key and means whereby the key must be withdrawn from the lock before it can be opened. A

Another object of the invention is to pro- Vvide a simple and strong padlock that` will be difficult to unlock withoutJ knowing the combination and having a key that fits.

Other objects of the invention will appear as the description proceeds.

fir-embodiment of the invention is shown 4in the accompanying drawings in which the samev portion throughout, but I am aware that there may be modifications thereof. l

Figure 1 is a perspective view of the padlock with key in position,

Fig. 2 is a longitudinal section of the preferred form of locking mechanism,

Fig. 3 is a section on the line 3-3 in Fig. 2, with the parts shown in Fig. 5 left out for purposes of illustration,

Fig. 4 is a face view of the padlock showing combination dial and keyhole,

Fig. 5 is a detail of parts shown in section in Fig. 2,

Fig. 6 is a longitudinal section of a modified form of locking mechanism,

Fig. 7 is a detail of parts shown in section in Fig. 6, Y n 1 Fig. 8 is a detail of the revolving cylinder,

Fig. 9 is a perspective view of the tumbler 17, and

Fig. 10 is a perspective view of themember 20.

The numeral 1 indicates the body of the padlock in which a shackle 2 forms the locking member, and has the under-cut portion as shown at 3 and the groove 4 thus forming an overhanging portion 5. This overhanging portion 5 will form the locking means, when in contact or is held b the shoulder 6 of the movable dial 7. The dial 7 is free to revolve and has a keyhole 8 made to fit a special key 9 for each lock.

The dial 7 is held in place by the ring 10. This ring can be retained in place by any suitable means, as by riveting in as shown at the edge 11. a slot 12 in which the latch 13 is pivoted on the dial body at 14. The'shapeof the latch 13 conforms to the outer surface of the dial body and shoulders 15 prevent the latch 13 from swinging out beyond the cylindrical surface of the dial body T. The latch is shown with the shouldersl in contact with the inner edges of the slot 12 in Figs.v

2, 3, and 8.

The latch 13 Vhas a projecting portion 16 which is adapted` to swing across the keyhole 8 when the key 9 is withdrawn, thus allowing the latch 13 to drop into the permutation notches; when the key is inserted the latch 13 is held so its outer surface conforms with the surface of the dial body 7 which has the shoulder 6.

l/Vhcn the dial 7 is turned so that the latch 13 registers with the overhanging portion 5 of the shackle 2, and the permutation tumbler 17 isturned so thatits notch 18 is in line Awith the notch 19 in the flange 20, the

latch will swing into said notches when the key is withdrawn, thereby allowing the shackle to drop down far enough so that the opposite member of the shackle will be free to swing around as shown by thefdotted lines at 2.

The permutation tumber 17 is a part of the tubular body 21 and is free to turn in the flange 2O which is stationary. The permutation tumbler 17 and flange 2O are held tightly together by the friction of the cross bar 21 spring 22 and pin 23. The permutation tumbler is turned so that its notch 18 is in line with the notch 19 by turning the The dial 7 is provided with key to the right in this instance, unti-la pre- This action is attained by the rotatablyV mounted cylinder 24 into which the key projects, by means of a pawl 25 pivoted in the ioV permutation tumbler V17 with' a spring 25l and engaging a notch 26 in the cylinder, so that when turned to the right it turns the permutation tumbler with it,gbut when turned back, turns freely' and leavesl the Y assembled, with permutation tumbler 17,

member 21,V spring 22 and pin 23. Y This unit as assembled is placed in position Jfrom the dial face side and has to be tilted so it will swing under the overhanging projection 5 of the shackle, and is held in the position in 2 by the dial body 7 and the dial body is held in place so it can turn freely by the ring 10. This ring is preferably riveted inv as shown, the complete operation is as follows:

The key 9 is inserted and the dial 7 turned clockwise so the marken said dial registers with a predetermined mark on the body 1.

rlhis turns the permutation tumbler 17 so its notch 18ccomes directly over the notch 19 which isY in line with the shackle 2. N ow -the key is turned back counter clockwiseso that the said mark on the dial registers with 13 is turned back in line with the' notches 18 and 19 and the shackle 2 and when the key o 9 is'removed, theprojectionl swings over 4member 20; thisposition trees the opposite end of the shackle andv allows it to swing thekeyhole allowing :the latch 13 to drop 'into the notches lS'and 19, thereby releasing the overhanging portion 5 of the shackle and allowing it to dropas far asthe anged around as shown at 2', `Fig. 4:.

l/Vhen the'key is turned counter clockwise a click can v,be heard when the pawl Q5 drops -into the notch26 by the action of the spring 25 this actfcan be'us'edV to detect tamper- 'ing-with the padlock by turning the dialclockwise to a certain `noted position and removing thev key, Vthen whenthe key isY in#V serted andthe dial turned counter clock- ,wise the pawl' will click at the noted Vposition; it it clicks at some other point, the

dial has been turned.Vv g The modied-form shown in Fig. 6 dis;

the notch V18 in line with notch 19 and the shackle 2, and then raising the key and turning thexdial body back to a predetermined yJoint andthen removin the ke so the l i n latch. can dropr in the said notches and allow the shackle to drop as described above.

YWhat l claim is as follows,"'but various modifications may bemade in the construcportion of the other'of said ends is adapted to "slide in a locked position, an opening in said dial-communicating with said groove and adapted to be filled by a pivoted latch when ina locked position, a yrotatable tumbler adapted'to hold said pivoted latch in a locked position, a notch in said tumbler into which'the said latch falls in the un- Y locked position, means for turning said rotatable tumbler in one directionfby turning said dial, and means for holding said rotatable tumbler stationary Vwhen said dial is turned in the opposite direction.

2'. A combination and key padlock comprising` a body, a Vslidable'shackle mounted in said body, an overhanging portion oisaid shackle adapted to slide ina groove in a rotatable dial body, a releasinglatch in said groove, a rotatable tumbler Vwith a notch Vadapted to release said latch when turned to bring said notch in alinement withV saldreleasing latch, a key adapted to slide throughV said dial "body and-enter said rotatable tumbler so that when said tumbler is turned i 'Y to acertain point marked byY a character on the aceoi: 4said dial, the said key can be raised to clear said rotatable tumblerV and i919. Y Y

Y Y YManko rrunonov. 

